---
title: "Incident Writeups - Postmortems, Root Causes, and What Changed"
lang: "en"
author: "Mohammad Abu Mattar"
canonical: https://mkabumattar.com/incidents
---

# Incidents

Blameless postmortems from production: the timeline, what actually caused it, and the follow-ups that shipped afterwards.

[All Incidents1](/incidents)[Reliability1](/incidents/categories/reliability)[Architecture1](/incidents/categories/architecture)

CategoryAllReliability (1)Architecture (1)TagAllPostmortem (1)Aws (1)Multi region (1)Payments (1)Idempotency (1)Failover (1)SortNewest firstOldest firstA to ZShortest read first

Nothing matches that combination

Filters stack, so two narrow picks often come up empty even when each has results on its own.

## [A Regional Control-Plane Failure Took a Payments API Offline](/incidents/post/single-region-payments-api-regional-outage)

-   Sev1
-   A few hours
-   [Reliability](/incidents/categories/reliability)
-   [Architecture](/incidents/categories/architecture)
-   08 Sept 2026

A money-movement API ran in one AWS region for years. A regional control-plane incident took it offline for hours with nowhere to fail over to. The fix was idempotency first, then a second region.

[#Postmortem](/incidents/tags/postmortem)[#AWS](/incidents/tags/aws)[#Multi Region](/incidents/tags/multi-region)+3 tags

[Read Postmortem](/incidents/post/single-region-payments-api-regional-outage)

### [Categories](/incidents/categories)

-   [Reliability1](/incidents/categories/reliability)
-   [Architecture1](/incidents/categories/architecture)

### [Tags](/incidents/tags)

[#Postmortem1](/incidents/tags/postmortem)[#Aws1](/incidents/tags/aws)[#Multi region1](/incidents/tags/multi-region)[#Payments1](/incidents/tags/payments)[#Idempotency1](/incidents/tags/idempotency)[#Failover1](/incidents/tags/failover)